Double-click the McAfeeSecurity1.1_Mac.dmg file to expand and open it.

Double-click the McAfee Security for Mac-Anti-malware-1.1-RTW-1309.mpkg file to start the installer.

Follow the instructions to install.

Updating VirusScan Virus Definition Files

McAfee Security v 1.1 by default is set to Automatically check for updates. If you are using a laptop and don't always have an internet connection it is a good idea to manually run the eUpdate at least once a week.